A US woman who shot and killed her husband and two adult children before taking her own life is thought to have committed the shocking crime as a result of being ostracised from the religion she was raised in.

A federal judge sentenced a former Arkansas judge Wednesday to five years in prison — a stiffer punishment than prosecutors recommended — after he admitted giving young male defendants lighter sentences in return for personal benefits that included sexual favours.

Every time I tell a mate I’m doing a story on cryptocurrency, they invariably ask me the same two questions: should they invest their own hard-earned money, and which cryptocurrency will get them a Lamborghini/yacht/island quickest?

In a 60 Minutes online exclusive, reporter Liz Hayes quizzed Australian Prime Minister Malcolm Turnbull on his relationship with the unpredictable Twitter aficionado and US president Donald Trump ahead of their meeting at the White House Friday.

Schoolie knocked out in brutal one-punch attack

Shocking video has emerged of a teenager being knocked out in a vicious one-punch attack in Surfers Paradise.

The video was shot about 3.15am today on Orchid Avenue and shows three men kicking the victim in the legs before he is punched to the ground.

9NEWS understands the victim was unconscious for a few minutes and was left bleeding from the head before being transported to Gold Coast University Hospital for treatment.

The man was attacked on Orchid Avenue this morning. (9NEWS)Video shows the moment the man was knocked unconscious. (9NEWS)The man was treated for head injuries but is expected to make a full recovery. (9NEWS)

The victim is understood to be an 18-year-old Schoolies reveller who was visiting the Gold Coast from New South Wales.

A friend has told 9NEWS the teenager was targeted after sticking up for a group of women who were being harassed outside a bar.

Police are investigating the incident but no formal complaint has been made and no charges have yet been laid.